3 results about "Fibre spinning" patented technology

The utility model relates to the technical field of zirconium oxide fiberboard production equipment and colloid filamentation, in particular to a thread throwing disc for manufacturing zirconium oxide fibers. The thread throwing disc comprises an inner cylinder core and an outer sleeve cover, a plurality of mounting holes are formed in the side wall of the inner cylinder core, detachable thread throwing ring modules are connected in the holes through sleeving rods, thread throwing holes of different specifications are formed in the modules, and flexible replacement of the hole diameter and the number is achieved. The top of the outer sleeve cover is provided with an installation pipe opening connected with a motor shaft and provided with a feeding channel. The outer sleeve cover and the inner cylinder core are in sealed connection through threads, and a sealing gasket and a fixing piece are arranged to enhance stability. The thread throwing ring module is embedded into the through hole of the outer sleeve cover to play a role in limiting and prevent relative rotation. The device is reasonable in structural design, has the advantages of being high in modularization degree, convenient to replace, good in sealing performance, stable in operation and the like, and effectively improves adaptability and economical efficiency in the zirconium oxide fiber production process.

The preparation method of the aerogel aramid fiber heat-insulation flocculus for the protective clothing comprises the following steps: a) extruding an aramid nanofiber spinning solution through a spinneret plate, performing 1-2 stages of coagulating bath, and performing multi-stage drafting in the coagulating bath to obtain wet gel fibers; b) collecting the aerogel wet fibers prepared in the step a), shearing to obtain wet gel chopped fibers, and drying to obtain aerogel aramid chopped fibers; and c) mixing the aerogel aramid chopped fibers obtained in the step b) and commercial meta-position aramid short fibers according to a mass ratio, and then performing a needling process to prepare the aerogel aramid thermal insulation flocculus. According to the scheme, aramid is used as a raw material, aerogel aramid chopped fibers are prepared by adopting a wet spinning process, the thermal insulation flocculus formed by mixing commercial meta-position aramid short fibers and aerogel aramid short fibers is prepared on the basis of an aerogel structure of the aerogel aramid fibers, and the aerogel aramid short fibers are added to improve the thermal insulation performance of the flocculus and reduce the gram weight.